50D exposure lock problem

I posted this in EOS forum, but it's more likely to be read by a sports shooter:

I use rear autofocus on my 50 D with the (AF-ON) and (*) buttons reversed.

If I am following sports action in AI Servo, and accidentally hit the AF-ON button (which is now exposure lock) with my thumb, I cannot get exposure lock to release unless I wait 4 seconds or take a pic. If I'm following a subject (focused, but not shooting) and the light changes before the 4 sec, then I have an incorrect exposure. Seems like bad engineering but maybe I'm missing something. Anyone else with fat thumbs have this problem or a solution?

whuband wrote in post #9709899
I posted this in EOS forum, but it's more likely to be read by a sports shooter:

I use rear autofocus on my 50 D with the (AF-ON) and (*) buttons reversed.

If I am following sports action in AI Servo, and accidentally hit the AF-ON button (which is now exposure lock) with my thumb, I cannot get exposure lock to release unless I wait 4 seconds or take a pic. If I'm following a subject (focused, but not shooting) and the light changes before the 4 sec, then I have an incorrect exposure. Seems like bad engineering but maybe I'm missing something. Anyone else with fat thumbs have this problem or a solution?

Also got a 50D. I think you are stuck with it. It really annoys me that I can't just touch the shutter button and clear it. And the really annoying thing for me is that I want more than 4 seconds without having to hold the button down as I use it for AE.

I guess the only way out is to unswap or disable when you are in those situations? In AI Servo, the exposure is corrected as the light changes, so if you are having that trouble, remove the cause. A PITA I know, but....

Maybe just set it back to "normal" and not have that happen? Just asking!